Of course, its viable to use Lua on a blackfin - what I meant was, what is your product? It sounds very interesting and I'd be happy to know of other examples of pro-audio gear using Lua and scripting languages in general, paired with a C/C++ core .. having built a few myself. :)
Ah, well from the perspective of someone interested in your product, I hope you'll give me enough hints that I'll recognize it when I see it on the market!
